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context-sensitive help for GPE

gpe-what is a notification tray applet to control
context sensitive help in the GPE Palmtop Environment
that replaces the mouse-over tooltips that are not usable
with the stylus commonly used with embedded devices.

When the tray icon is clicked, the system enters "help mode"; normal UI
is suspended, and the next stylus tap selects the widget for which
help is wanted. The help text, if available, is displayed in a small
pop-up bubble.